2,658の癌全体のゲノムにおける非コーディング体幹の分析
Esther Rheinbay1,2,3, Morten Muhlig Nielsen4, Federico Abascal5
1The Broad Institute of MIT and Harvard, Cambridge, MA, USA.
Nature
|February 7, 2020
まとめ
研究者はがんゲノムのコード化されていない領域を分析し TP53変異のような新しいがん誘発因子を特定しました これは癌の誘発因子の発見に タンパク質をコードする遺伝子を 超えて理解を広げています
科学分野:
- ゲノミクス
- 癌 生物学
- バイオ情報学
背景:
- 癌の誘発因子の発見は 伝統的に タンパク質をコードする遺伝子に焦点を当てていました
- がんにおける非コード領域の役割は,まだあまり研究されていない.
- 大規模なゲノムデータセットは 新しい発見の機会を提供します
研究 の 目的:
- ガンゲノムの非コーディング領域におけるドライバポイント変異と構造変異を分析する.
- 先進的な統計的方法を使用して,新しい非コーディングがんドライバーを特定する.
- コード化地域と非コード化地域のドライバーの頻度を比較する.
主な方法:
- PCAWGとTCGAのコンソーシアムから2658の全がんゲノムを分析した.
- ポイント変異のドライバー発見方法を組み合わせる厳密な統計的戦略の開発.
- 構造変異の要因を特定するために2つの新しい方法を適用し,再発的なブレイクポイントと並列に焦点を当てます.
主要な成果:
- 既知の癌ドライバーを確認し 他者を尋問した
- TP53 5'領域の変異とNFKBIZ/TOB1 3' UTR変異を含む,新しい非コーディングドライバーが特定されました.
- BRD4の焦点欠損と AKR1C遺伝子の位置の変化を発見した.
結論:
- タンパク質をコードする遺伝子よりも少ないが,非コーディング領域は癌の誘発因子を宿している.
- 先進的なゲノム解析により 新しい癌の誘発メカニズムが明らかになりました
- より多くのがんゲノムを扱う将来の研究で 追加的な非コーディング要因が明らかにされるでしょう
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